Singleton Pattern
The Singleton Pattern is a creational design pattern that ensures a class has only one instance and provides a global point of access to it. It is commonly used in software development to control access to shared resources, such as configuration settings, logging services, or database connections, preventing multiple instances from causing conflicts or inefficiencies.
Developers should use the Singleton Pattern when they need to guarantee that only one instance of a class exists throughout the application's lifecycle, such as for managing a shared resource like a cache, thread pool, or settings manager. It is particularly useful in scenarios where multiple instances could lead to data inconsistency, high memory usage, or performance issues, such as in logging frameworks or global configuration objects.